Nokia Nokia Certifications 4A0-C01 Questions & Answers

• Question 81:

  What happens by default on an Alcatel-Lucent 7750 SR when a null encapsulated SAP receives a frame with a VLAN tag?

  A. The original VLAN tag is removed.

  B. The original VLAN tag is kept.

  C. The VLAN tag is replaced by a provider tag.

  D. The VLAN tag is kept and a provider tag is added.

  Correct Answer: B

• Question 82:

  Which of the following commands would be used to configure a new VPLS service that will use a default vc-id of 5 and a customer id of 4?

  A. configure service vpls 4 customer 4 vc-id 5 create

  B. configure service vpls 5 customer 4 create

  C. configure service vpls 100 customer 4 vc-id 4 create

  D. configure service vpls vc-id 5 customer4 create

  Correct Answer: B

• Question 83:

  Which of the following best describes how a MAC FDB is populated in a VPLS service?

  A. A VPLS service does not use a MAC FDB.

  B. The router reads the destination MAC address of frames passing through the service.

  C. The router reads the source MAC address of frames passing through the service.

  D. The router uses reverse ARP (RARP) to resolve the MAC addresses for unknown destinations.

  E. The router is programmed with MAC addresses by the network administrator.

  Correct Answer: C

• Question 84:

  Which of the following statements are FALSE regarding the VPN-IPv4 address family? (Choose 2)

  A. When a PE router receives an IPv4 prefix from its local CE it creates a VPN-IPv4 prefix.

  B. The route distinguisher (RD) is appended to the IPv4 prefix to form a 16 byte VPN-IPv4 prefix.

  C. VPN-IPv4 allows BGP to distinguish multiple routes with the same prefixes originated from distinct customers

  D. VPN-IPv4 addresses are only present within the service provider network.

  E. In VPRN, data traffic is carried in VPN-IPv4 packets.

  Correct Answer: BC

• Question 85:

  Which of the following best describes the flooding of traffic on a PE when unknown traffic is received on a SAP of a VPLS?

  A. Traffic is flooded to all SAPs in the service.

  B. Traffic is flooded to all SAPs and spoke SDPs in the service.

  C. Traffic is flooded to all SAPs and mesh SDPs in the service.

  D. Traffic is flooded to all SAPs, spoke SDPs, and mesh SDPs in the service.

  E. The traffic is not flooded.

  Correct Answer: D

• Question 86:

  The SAP 1/1/1:2.3 receives an Ethernet frame with outer VLAN tag 5 and inner VLAN tag

  3. Which of the following is TRUE?

  A. The frame is dropped.

  B. The frame's outer tag is changed to match the SAP, and it is accepted.

  C. The frames outer tag is dropped, and the frame is accepted.

  D. The frame's tags are removed, and the frame is accepted.

  Correct Answer: A

• Question 87:

  Click the exhibit.

  

  The two PEs are providing 6VPE and IPv4 VPRNs. The core network is IPv4/MPLS. Which of the following is the BGP family configuration for the MP-BPG on the PEs?

  A. family ipv4 ipv6

  B. family vpn-ipv4ipv6

  C. family vpn-ipv4 vpn-ipv6

  D. family ipv6 vpn-ipv6

  Correct Answer: C

• Question 88:

  Which command provides a summary status of the VPLS service 100?

  A. show service id 100 base

  B. show service vpls 100

  C. show service vpls 100 summary

  D. show service vpls 100 all

  E. None of the above.

  Correct Answer: A

• Question 89:

  What is the purpose of service mirroring on the Alcatel-Lucent Service Router?

  A. To mirror service requirements of a customer with a single branch office and multiple remote sites

  B. To utilize unused ports of a service router until they are required for a service.

  C. To replicate traffic from a service port to another port for debugging or monitoring functions

  D. To ease the configuration burden of services that support a large number of subscribers

  E. All of the above

  Correct Answer: C

• Question 90:

  A customer requests that their Layer 2 Ethernet service be configured to forward frames up to 1514 bytes. The service provider is using MPLS encapsulation and RSVP-TE fast- reroute with facilities bypass on their redundant IP/MPLS network. What is the minimum MTU setting for the network ports?

  A. 1514

  B. 1528

  C. 1536

  D. 1540

  E. 1560

  Correct Answer: D